题目内容
计算下面各题.
(165-675÷25)×45
420÷[420÷(418-390)].
(165-675÷25)×45
420÷[420÷(418-390)].
(1)(165-675÷25)×45,
=(165-27)×45,
=138×45,
=6210;
(2)420÷[420÷(418-390)],
=420÷[420÷28],
=420÷15,
=28.
=(165-27)×45,
=138×45,
=6210;
(2)420÷[420÷(418-390)],
=420÷[420÷28],
=420÷15,
=28.
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